/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Cyber Color Palette */
    --primary-color: #00d9ff;
    --secondary-color: #ff006e;
    --accent-color: #7b2cbf;
    --success-color: #06ffa5;
    --warning-color: #ffbe0b;
    
    /* Background Colors */
    --bg-dark: #0a0e27;
    --bg-darker: #050714;
    --bg-card: rgba(15, 23, 42, 0.8);
    --bg-overlay: rgba(0, 217, 255, 0.05);
    
    /* Text Colors */
    --text-light: #ffffff;
    --text-gray: #94a3b8;
    --text-dark: #1e293b;
    
    /* Spacing */
    --container-width: 1200px;
    --section-padding: 80px 20px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Cyber Background ===== */
.cyber-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 50%, #1a1f3a 100%);
}

.stars {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, white, transparent),
        radial-gradient(2px 2px at 60px 70px, white, transparent),
        radial-gradient(1px 1px at 50px 50px, white, transparent),
        radial-gradient(1px 1px at 130px 80px, white, transparent),
        radial-gradient(2px 2px at 90px 10px, white, transparent);
    background-size: 200px 200px;
    animation: twinkle 20s infinite;
    opacity: 0.5;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

.grid-lines {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 217, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 217, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translateY(0); }
    100% { transform: translateY(50px); }
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 217, 255, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 15px 0;
    background: rgba(10, 14, 39, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
}

.nav-brand:hover {
    transform: translateY(-2px);
}

/* Logo图标样式 */
.nav-brand i {
    font-size: 2rem;
    animation: pulse 2s infinite;
}

/* Logo图片样式（如果使用图片logo） */
.nav-brand .logo-img {
    height: 45px;
    width: auto;
    object-fit: contain;
    transition: var(--transition);
}

.nav-brand:hover .logo-img {
    filter: brightness(1.2);
}

/* Logo文字容器 */
.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

/* 公司名称主标题 */
.company-name {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 1px;
}

/* 公司名称副标题（可选） */
.company-tagline {
    font-size: 0.65rem;
    color: var(--text-gray);
    font-weight: 400;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: -2px;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    color: var(--text-gray);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid var(--primary-color);
    border-radius: 25px;
    color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}

.lang-switch:hover {
    background: rgba(0, 217, 255, 0.2);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 20px 80px;
    position: relative;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.glitch-text {
    position: relative;
    animation: glitch 3s infinite;
}

@keyframes glitch {
    0%, 90%, 100% { transform: translate(0); }
    92% { transform: translate(-2px, 2px); }
    94% { transform: translate(2px, -2px); }
    96% { transform: translate(-2px, -2px); }
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 10px 30px rgba(0, 217, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 217, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

.btn-lg {
    padding: 18px 42px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.hero-visual {
    position: relative;
    height: 400px;
}

.floating-cube {
    position: absolute;
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.2), rgba(255, 0, 110, 0.2));
    border: 2px solid var(--primary-color);
    border-radius: 20px;
    animation: float 6s ease-in-out infinite;
    box-shadow: 0 0 60px rgba(0, 217, 255, 0.3);
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(180deg); }
}

.data-stream {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, transparent, var(--primary-color), transparent);
    opacity: 0.1;
    animation: stream 3s linear infinite;
}

@keyframes stream {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100%); }
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--primary-color);
    border-radius: 25px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(20px); }
}

/* ===== Sections ===== */
section {
    padding: var(--section-padding);
    position: relative;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-header {
    padding: 150px 20px 80px;
    text-align: center;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(255, 0, 110, 0.1));
    border-bottom: 1px solid rgba(0, 217, 255, 0.2);
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-header p {
    font-size: 1.25rem;
    color: var(--text-gray);
}

/* ===== Features Section ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-card);
    padding: 40px 30px;
    border-radius: 20px;
    border: 1px solid rgba(0, 217, 255, 0.2);
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 60px rgba(0, 217, 255, 0.3);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-light);
}

.feature-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* ===== Stats Section ===== */
.stats {
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.05), rgba(255, 0, 110, 0.05));
    border-top: 1px solid rgba(0, 217, 255, 0.2);
    border-bottom: 1px solid rgba(0, 217, 255, 0.2);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-gray);
}

/* ===== CTA Section ===== */
.cta {
    text-align: center;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(255, 0, 110, 0.1));
    border-radius: 30px;
    margin: 0 20px;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--text-light);
}

.cta p {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 40px;
}

/* ===== About Page ===== */
.about-intro {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 60px;
}

.about-intro h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-intro p {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
}

.mission-vision {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
    margin-bottom: 80px;
}

.mission-card {
    background: var(--bg-card);
    padding: 50px 40px;
    border-radius: 20px;
    border: 1px solid rgba(0, 217, 255, 0.2);
    backdrop-filter: blur(10px);
}

.card-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.mission-card h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--text-light);
}

.mission-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

.core-values h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 80px;
}

.value-item {
    text-align: center;
    padding: 30px 20px;
}

.value-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.value-item h4 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--text-light);
}

.value-item p {
    color: var(--text-gray);
}

.expertise h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.expertise-list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.expertise-item {
    display: flex;
    gap: 30px;
    background: var(--bg-card);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(0, 217, 255, 0.2);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.expertise-item:hover {
    border-color: var(--primary-color);
    transform: translateX(10px);
}

.expertise-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
}

.expertise-content h4 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-light);
}

.expertise-content p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* ===== Services Page ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.service-card {
    background: var(--bg-card);
    border-radius: 20px;
    border: 1px solid rgba(0, 217, 255, 0.2);
    overflow: hidden;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 60px rgba(0, 217, 255, 0.3);
}

.service-header {
    padding: 40px 30px 20px;
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 2rem;
    color: white;
}

.service-card h3 {
    font-size: 1.5rem;
    color: var(--text-light);
}

.service-content {
    padding: 0 30px 40px;
}

.service-content p {
    color: var(--text-gray);
    margin-bottom: 20px;
    line-height: 1.8;
}

.service-features {
    list-style: none;
    margin-bottom: 25px;
}

.service-features li {
    padding: 10px 0;
    padding-left: 30px;
    color: var(--text-gray);
    position: relative;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

.service-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.service-link:hover {
    color: var(--secondary-color);
}

/* ===== Contact Page ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info-panel h2,
.contact-form-panel h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact-info-panel p {
    color: var(--text-gray);
    margin-bottom: 40px;
    line-height: 1.8;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
}

.contact-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: white;
}

.contact-text h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--text-light);
}

.contact-text p {
    color: var(--text-gray);
    margin: 0;
    line-height: 1.6;
}

.contact-text a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.contact-text a:hover {
    color: var(--secondary-color);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: var(--text-light);
}

.form-group input,
.form-group textarea {
    padding: 14px 18px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(0, 217, 255, 0.2);
    border-radius: 10px;
    color: var(--text-light);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(15, 23, 42, 0.8);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== Legal Pages ===== */
.legal-content {
    max-width: 900px;
    margin: 0 auto;
}

.legal-document {
    background: var(--bg-card);
    padding: 60px;
    border-radius: 20px;
    border: 1px solid rgba(0, 217, 255, 0.2);
    backdrop-filter: blur(10px);
}

.last-updated {
    color: var(--text-gray);
    font-style: italic;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(0, 217, 255, 0.1);
}

.legal-section {
    margin-bottom: 40px;
}

.legal-section h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.legal-section h3 {
    font-size: 1.3rem;
    margin: 20px 0 15px;
    color: var(--text-light);
}

.legal-section p {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 15px;
}

.legal-section ul {
    margin-left: 30px;
    margin-bottom: 20px;
}

.legal-section li {
    color: var(--text-gray);
    margin-bottom: 10px;
    line-height: 1.8;
}

.contact-box {
    background: rgba(0, 217, 255, 0.05);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid rgba(0, 217, 255, 0.2);
    margin-top: 20px;
}

.contact-box p {
    margin-bottom: 10px;
}

.contact-box strong {
    color: var(--primary-color);
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid rgba(0, 217, 255, 0.2);
    padding: 60px 20px 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.footer-col p,
.footer-col a {
    color: var(--text-gray);
    line-height: 1.8;
}

.footer-address {
    display: flex;
    gap: 10px;
}

.footer-address i {
    color: var(--primary-color);
    margin-top: 5px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col a {
    text-decoration: none;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--primary-color);
}

.contact-info li {
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-info i {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(0, 217, 255, 0.1);
    color: var(--text-gray);
}

/* ===== Responsive Design ===== */
@media (max-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .mission-vision {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    /* 移动端Logo样式 */
    .nav-brand {
        gap: 8px;
    }
    
    .nav-brand i {
        font-size: 1.5rem;
    }
    
    .company-name {
        font-size: 1.1rem;
    }
    
    .company-tagline {
        font-size: 0.55rem;
        letter-spacing: 1px;
    }
    
    .nav-brand .logo-img {
        height: 35px;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(10, 14, 39, 0.98);
        flex-direction: column;
        justify-content: flex-start;
        padding: 40px 20px;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .legal-document {
        padding: 30px 20px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    /* 超小屏幕Logo优化 */
    .nav-brand {
        gap: 6px;
    }
    
    .nav-brand i {
        font-size: 1.3rem;
    }
    
    .company-name {
        font-size: 1rem;
    }
    
    .company-tagline {
        font-size: 0.5rem;
        letter-spacing: 0.5px;
    }
    
    .nav-brand .logo-img {
        height: 30px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .expertise-item {
        flex-direction: column;
        text-align: center;
    }
}